Molded surface of a concrete product



FIG. 1 is a is a front view of a molded surface of a concrete product, according to our design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a right perspective view thereof.

The broken lines in all views are included for the purpose of illustrating a portion of the concrete product that forms no part of the claimed design. 

The ornamental design for a molded surface of a concrete product, as shown and described. 